NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–Cable Length Tester
For the power industry, due to the failure of the power cable, the location of the failure needs to be identified. In order to pinpoint the fault location and reduce excavation effort and search time, a smart cable path detector is required to quickly and accurately determine the cable path. Next small For the power industry, due to the failure of the power cable, it is necessary to identify the location of the failure.
In order to pinpoint the fault location and reduce excavation effort and search time, a smart cable path detector is required to quickly and accurately determine the cable path. Next, the editor will analyze and introduce the excellent role of the cable path meter in cable fault detection. There are many communication cables and TV cables in the communication industry. When these cables fail and need to be detected, they also need to determine their paths.
In order to avoid damaging the underground pipelines during the excavation process, reduce unnecessary economic losses, and speed up the progress of the project, it is necessary to accurately know the location of the pipelines buried underground. Due to the incomplete or missing data of the underground pipelines in the past, the urban construction planning department could not accurately grasp the distribution of the pipelines in the city, resulting in many problems in the urban planning process. Underground pipelines are routed and saved. Since the cables are directly buried or buried in the cable trench, it is difficult to observe the cable path when the GIS data is incomplete. Therefore, after the cable is reserved, the next step should be to use the path meter to find the cable direction and find out the approximate fault point. Position, the precise point behind it is meaningful.
At present, the commonly used cable path detection method is the audio induction method, that is, adding an audio current signal of a specific frequency to the cable, the current signal generates a magnetic field signal around the cable, and an induction coil is used to sense the magnetic field signal. After filtering, it is converted into The sound or waveform is displayed through headphones or a monitor, and the place where the sound or waveform is displayed is where the cable passes, thereby detecting the cable path. When using the audio induction method to detect the cable path, in order to obtain a relatively strong magnetic field signal on the ground surface, part of the current must pass through the ground, otherwise the magnetic field signal may be relatively weak. The intelligent cable path meter is a device for detecting the underground cable path. It not only has the functions of the old-fashioned underground cable path meter, but also has some new functions, and has made certain technological breakthroughs: 1: Peak mode, in this mode, it can be judged The relative position of the cable and the operator indicates the direction that the operator should move, so as to find the buried location of the underground cable.
2: Valley mode, this mode has a compass function, which can judge the deflection direction of the operator and the cable and prompt the operator to correct his direction in time until the position of the cable is found. 3: Automatic search and lock frequency function, in the case of unknown frequency input, the signal frequency can be searched, and then the incoming and outgoing frequencies can be determined and locked. 4: Current and depth display, which can display the current size and burial depth of underground cables in real time.
5: GPS positioning, when the position of the cable has been determined and the current geographic location information of the cable needs to be recorded, the GPS positioning function can be selected to record the geographic location information of the current cable, and finally uploaded to the computer for cable data management. The above is the introduction of the role of the cable path meter in the cable fault detection. I hope it can be helpful to everyone.
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